(19)
(11) EP 3 850 380 A1

(12)

(43) Date of publication:
21.07.2021 Bulletin 2021/29

(21) Application number: 19772935.3

(22) Date of filing: 05.09.2019
(51) International Patent Classification (IPC): 
G01R 31/12(2020.01)
G01R 15/16(2006.01)
 G01R 15/06(2006.01)
(86) International application number:
PCT/US2019/049801
(87) International publication number:
WO 2020/055666 (19.03.2020 Gazette 2020/12)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME
Designated Validation States:
KH MA MD TN

(30) Priority: 10.09.2018 US 201862729325 P

(71) Applicants:
  • 3M Innovative Properties Company
    St. Paul, MN 55133-3427 (US)
  • Connected Intelligence Systems Ltd.
    4059300 Netanya (IL)

(72) Inventors:
  • GUNDEL, Douglas B.
    St. Paul, Minnesota 55133-3427 (US)
  • DORON, Eyal
    30889 Caesarea (IL)
  • EMBON, Lior
    30500 Binyamina (IL)
  • BLICH, Udi
    38935 Ichud (IL)

(74) Representative: Mathys & Squire 
Theatinerstraße 7
80333 München
80333 München (DE)

   


(54) ELECTRICAL POWER CABLE MONITORING DEVICE USING LOW SIDE ELECTRODE AND EARTH GROUND SEPARATION